CN215537954U - Fire extinguishing part, battery module and battery box - Google Patents
Fire extinguishing part, battery module and battery box Download PDFInfo
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- CN215537954U CN215537954U CN202023049512.7U CN202023049512U CN215537954U CN 215537954 U CN215537954 U CN 215537954U CN 202023049512 U CN202023049512 U CN 202023049512U CN 215537954 U CN215537954 U CN 215537954U
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- fire extinguishing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a fire extinguishing component, a battery module and a battery box, wherein the fire extinguishing component comprises a fire extinguishing agent containing cavity for storing a fire extinguishing agent; the bottom of the fire extinguishing agent containing cavity is provided with a plurality of explosion-proof interfaces, and each explosion-proof interface is in butt joint with an explosion-proof valve of a battery unit; the fire extinguishing agent holds and is provided with on the lateral wall in chamber and is used for holding the explosion-proof valve of chamber that holds that opens the pressure release when the fire extinguishing agent holds intracavity pressure and reaches opening pressure. According to the utility model, after the internal pressure of the battery unit exceeds the opening pressure of the explosion-proof valve of the battery unit, the explosion-proof valve of the battery unit is opened to release pressure, the sprayed high-pressure fluid enters the fire extinguishing agent containing cavity, the fire extinguishing agent in the fire extinguishing agent containing cavity flows into the battery to extinguish the fire of the battery unit, and when the instantaneous pressure of the fire extinguishing agent containing cavity is overlarge, the explosion-proof valve of the fire extinguishing agent containing cavity is flushed, so that the explosion caused by overlarge pressure in the battery unit and the fire extinguishing agent containing cavity is prevented.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a fire extinguishing component, a battery module and a battery box.
Background
With the continuous popularization of new energy automobiles, the number of new energy automobiles in China is increased rapidly, and the safety problem is increased more and more. Lithium ion batteries are mostly adopted as power systems of new energy automobiles, certain potential safety hazards exist when the lithium ion batteries are used in vehicles, and particularly, safety accidents of smoking, fire and even explosion easily occur to the lithium ion batteries under the conditions of overcharge, overdischarge, extrusion, needling, burning and the like. In recent years, accidents caused by ignition of batteries of new energy automobiles at home and abroad are increased continuously, in order to enhance the safety performance of the batteries of the new energy automobiles, new design and improvement on battery modules are needed, and a fire-fighting function is added to the vehicle-mounted battery module, so that an effective method is provided.
Among the correlation technique, mainly through dispose fire extinguishing system alone outside the battery module, when taking place fire alarm, fire extinguishing system sprays extinguishing agent to the battery package rapidly and puts out a fire or start the fire extinguisher and put out a fire, and this kind of method reaction is slow, can not put out a fire the cooling to dangerous department the very first time to can lead to inside a large amount of electrical part damages and the lithium cell is scrapped, causes very big loss.
In many cases, the thermal runaway of the battery module always originates from individual battery units, the thermal runaway of the battery units occurs due to some reasons, the internal pressure of the battery units is increased, after the internal pressure of the battery units exceeds the set pressure of the explosion-proof valves of the battery units, the explosion-proof valves of the battery units are opened, the batteries spray high-pressure high-temperature electrolyte and gas outwards from the explosion-proof valves, and the sprays can cause the thermal runaway of other batteries and finally cause serious loss. If the ejecta are collected and the fire extinguishing agent is injected into the battery cell in time when thermal runaway of the individual battery cells occurs, the occurrence of the above-mentioned serious loss can be avoided.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a fire extinguishing component, a battery module and a battery box, which have high fire extinguishing efficiency and can prevent the battery module from exploding.
The utility model adopts the following technical scheme:
in one aspect, a fire suppression component includes a fire suppressant compartment for storing a fire suppressant; the bottom of the fire extinguishing agent containing cavity is provided with a plurality of explosion-proof interfaces, and each explosion-proof interface is in butt joint with an explosion-proof valve of a battery unit; the fire extinguishing agent holds and is provided with on the lateral wall in chamber and is used for holding the explosion-proof valve of chamber that holds that opens the pressure release when the fire extinguishing agent holds intracavity pressure and reaches opening pressure.
Preferably, the explosion-proof valve of the containing cavity is provided with at least one valve.
Preferably, the fire extinguishing part is of a cuboid structure; the explosion-proof valve of the accommodating cavity is arranged on the outer side wall of the fire extinguishing agent accommodating cavity in the length direction.
Preferably, the battery unit explosion-proof valve is in sealing butt joint with the explosion-proof interface so that fluid sprayed out of the battery unit enters the fire extinguishing agent accommodating cavity when the battery unit explosion-proof valve is opened and fire extinguishing agent flows into the battery unit through the battery unit explosion-proof valve.
In a second aspect, a battery module comprises a plurality of battery units, wherein each battery unit is provided with a positive terminal and a negative terminal; the battery unit explosion-proof valve on the battery unit is arranged between the positive connecting terminal and the negative connecting terminal and also comprises the fire extinguishing component; the fire extinguishing member is fixed between the positive terminal and the negative terminal of each battery cell.
Preferably, the length of the fire extinguishing member is greater than the length of the battery module.
Preferably, the fire extinguishing component is fixed with the battery module through bonding, or the fire extinguishing component is fixed with the battery module through welding, or the fire extinguishing component is fixed with the battery module through a connecting piece.
Preferably, an insulating protective layer is arranged between the fire extinguishing component and the battery unit.
Preferably, the insulation protection layer comprises a plastic coating layer, or the insulation protection layer comprises an insulation material layer.
In a third aspect, the battery box comprises a box body and the battery module arranged in the box body.
Compared with the prior art, the utility model has the following beneficial effects:
(1) after the internal pressure of the battery unit exceeds the opening pressure of the explosion-proof valve of the battery unit, the explosion-proof valve of the battery unit is opened to release pressure, the sprayed high-pressure fluid enters the fire extinguishing agent containing cavity, the fire extinguishing agent in the fire extinguishing agent containing cavity flows into the battery to extinguish the fire of the battery unit, and when the instantaneous pressure of the fire extinguishing agent containing cavity is overlarge, the explosion-proof valve of the fire extinguishing agent containing cavity is flushed, so that the explosion caused by overlarge pressure in the battery unit and the fire extinguishing agent containing cavity is prevented;
(2) the containing cavity explosion-proof valve is arranged on the outer side wall of the fire extinguishing agent containing cavity in the length direction, and the length of the fire extinguishing part is greater than that of the battery module, so that waste gas and liquid can be discharged in the direction far away from the battery module, and the battery module is protected;
(3) according to the utility model, the number of the containing cavity explosion-proof valves is determined according to the number of the battery units contained in the battery module, so that the pressure in the fire extinguishing agent containing cavity can be ensured not to be higher than the upper limit of the battery units when the thermal runaway of the plurality of battery units occurs;
(4) the battery unit explosion-proof valve is in sealed butt joint with the explosion-proof interface, so that high-pressure fluid sprayed out of the battery unit can enter the fire extinguishing agent accommodating cavity when the battery unit explosion-proof valve is opened, and the fire extinguishing agent flows into the battery unit through the battery unit explosion-proof valve.
The above description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the description of the technical means more comprehensible.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the utility model;
fig. 2 is an exploded view of a battery module according to an embodiment of the present invention;
fig. 3 is a partial sectional view of a battery module according to an embodiment of the present invention;
fig. 4 is a partial sectional view of a battery module according to an embodiment of the utility model.
Detailed Description
In order to make the technical solution and advantages of the present invention more apparent, the following description is taken in conjunction with the accompanying drawings and embodiments,
the present invention will be described in further detail. It should be understood that the detailed description and specific examples, while indicating the scope of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
For simplicity and clarity of description, the utility model will be described below by describing several representative embodiments. Numerous details of the embodiments are set forth to provide an understanding of the principles of the utility model. It will be apparent, however, that the utility model may be practiced without these specific details. Some embodiments are not described in detail, but rather are merely provided as frameworks, in order to avoid unnecessarily obscuring aspects of the utility model. Hereinafter, "including" means "including but not limited to", "according to … …" means "at least according to … …, but not limited to … … only". In view of the language convention of chinese, the following description, when it does not specifically state the number of a component, means that the component may be one or more, or may be understood as at least one.
In one aspect, the present invention is a fire extinguishing member 1 comprising a fire extinguishing agent accommodating chamber 11 for storing a fire extinguishing agent; the bottom of the fire extinguishing agent accommodating cavity 11 is provided with a plurality of explosion-proof interfaces 13, and each explosion-proof interface 13 is in butt joint with a battery unit explosion-proof valve 213 of one battery unit 21; and the outer side wall of the fire extinguishing agent containing cavity 11 is provided with a containing cavity explosion-proof valve 12 for opening and releasing pressure when the pressure in the fire extinguishing agent containing cavity 11 reaches the opening pressure.
The accommodating chamber explosion-proof valve 12 is provided with at least one.
The fire extinguishing component 1 is of a cuboid structure; the containing cavity explosion-proof valve 12 is arranged on the outer side wall of the fire extinguishing agent containing cavity 11 in the length direction.
The battery unit explosion-proof valve 213 is in sealed butt joint with the explosion-proof interface 13 so that when the battery unit explosion-proof valve 213 is opened, the fluid sprayed out of the battery unit 21 enters the fire extinguishing agent accommodating chamber 11 and the fire extinguishing agent flows into the interior of the battery unit 21 through the battery unit explosion-proof valve 213.
In a second aspect, the present invention provides a battery module 2, which includes a plurality of battery units 21, wherein each battery unit 21 is provided with a positive terminal 211 and a negative terminal 212; the battery unit explosion-proof valve 213 on the battery unit 21 is arranged between the positive terminal 211 and the negative terminal 212, and also comprises the fire extinguishing component 1; the fire extinguishing member 1 is fixed between the positive electrode terminal 211 and the negative electrode terminal 212 of each battery cell 21.
The length of the fire extinguishing member 1 is greater than that of the battery module 2.
The fire extinguishing component 1 is fixed with the battery module 2 through bonding, or the fire extinguishing component 1 is fixed with the battery module 2 through welding, or the fire extinguishing component 1 is fixed with the battery module 2 through a connecting piece.
An insulating protective layer is arranged between the fire extinguishing component 1 and the battery unit 21.
The insulating protection layer comprises a plastic coating layer, or the insulating protection layer comprises an insulating material layer.
In a third aspect, the utility model provides a battery box, which comprises a box body and the battery module 2 arranged in the box body.
Specifically, referring to fig. 21 to 4, the battery module 2 includes a battery unit 21, and a positive terminal 211 and a negative terminal 212 are provided on the battery unit 21. Battery module 2 links to each other with extinguishing member 1, and extinguishing member 1 has the fire extinguishing agent and holds chamber 11, and the fire extinguishing agent holds and has stored up the fire extinguishing agent in chamber 11, and the fire extinguishing agent holds chamber 11 and still has and holds 11 intracavity pressures in the chamber and open the pressure release when reaching opening pressure at the fire extinguishing agent, holds chamber 11 with the fire extinguishing agent and holds chamber explosion-proof valve 12 with outside intercommunication, holds chamber explosion-proof valve 12 and sets up on the lateral wall that the fire extinguishing agent holds 11 both ends in chamber.
In this embodiment, a cell explosion-proof valve 213 is provided between the positive electrode terminal 211 and the negative electrode terminal 212 of the battery cell 21, and the pressure in the battery cell 21 is released through the cell explosion-proof valve 213 when the pressure exceeds a set value. The wall of the fire extinguishing agent accommodating cavity 11 is provided with an explosion-proof interface 13 which is in butt joint with the battery unit explosion-proof valve 213 of each battery unit 21.
In order to ensure the fire extinguishing sensitivity and the explosion-proof sensitivity of the battery fire extinguishing unit 1, in the present embodiment, the opening pressure of the housing chamber explosion-proof valve 12 is less than or equal to the opening pressure of the battery cell explosion-proof valve 213. When the pressure value in the battery unit 21 is greater than the opening pressure of the battery unit explosion-proof valve 213, the fluid in the battery unit 21 flushes the battery unit explosion-proof valve 213, and the fire extinguishing agent flows into the battery through the battery unit explosion-proof valve 213 to extinguish or prevent fire inside the battery. When the pressure of the fluid flushed out through the battery unit explosion-proof valve 213 is too high, and the pressure in the fire extinguishing agent accommodating cavity 11 is greater than the opening pressure of the accommodating cavity explosion-proof valve 12, the accommodating cavity explosion-proof valve 12 of the battery fire extinguishing part 1 is opened, and finally the fire extinguishing agent accommodating cavity 11 is decompressed by discharging the pressure towards the outside of the battery fire extinguishing part 1.
In this embodiment, the battery extinguishing member 1 is a rectangular parallelepiped structure, and the width dimension thereof is smaller than the distance between the positive connection terminal 211 and the negative connection terminal 212 of the battery unit 21, and the battery extinguishing member 1 is fixed between the positive connection terminal 211 and the negative connection terminal 212 of each battery unit 21 in use.
The fire extinguishing agent containing cavity 11 of the battery fire extinguishing part 1 is filled with the fire extinguishing agent, and the fire extinguishing agent uses liquid which is good in electrical insulation performance, non-flammable and stable in chemical property, so that the battery module 2 can be favorably used for building a comprehensive and effective insulation network, and the release of the energy of the battery can be delayed. The fire extinguishing agent that adds in this embodiment adopts silicone oil, can carry out the ordinary pressure storage, and the save time is long, and is equivalent with battery module 2's life-span, need not change the fire extinguishing agent in the battery shelf life. In the embodiment, the fire extinguishing of the battery fire extinguishing part 1 is passive fire extinguishing, and the battery fire extinguishing part 1 does not need to be provided with a detection device and a driving device.
In this embodiment, the explosion-proof valves 12 are disposed on the side walls of the left and right ends of the fire extinguishing agent accommodating chamber 11. Will hold chamber explosion-proof valve 12 and set up on the lateral wall of controlling both ends and be convenient for hold chamber explosion-proof valve 12 because the fire extinguishing agent holds 11 pressures in the chamber when too big opening, can discharge waste gas waste liquid to the direction of keeping away from battery module 2 to protection battery module 2. In this embodiment, the number of the explosion-proof valves 12 in the accommodating chamber is two, and the number of the explosion-proof valves 12 in the accommodating chamber can be specifically determined according to the number of the battery units 21 contained in the battery module 2, so that it is ensured that the pressure in the fire extinguishing agent accommodating chamber 11 can be kept not higher than the upper limit of the battery units 21 when thermal runaway occurs in the plurality of battery units 21.
Further, fire extinguishing agent holds 11 length in chamber and is greater than battery module 2, also be in order to hold chamber explosion-proof valve 12 because fire extinguishing agent holds 11 pressure overgreat when opening, can discharge waste gas waste liquid to the direction of keeping away from battery module 2 to protection battery module 2.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (10)
1. A fire extinguishing unit, comprising a fire extinguishing agent accommodating chamber for storing a fire extinguishing agent; the bottom of the fire extinguishing agent containing cavity is provided with a plurality of explosion-proof interfaces, and each explosion-proof interface is in butt joint with an explosion-proof valve of a battery unit; the fire extinguishing agent holds and is provided with on the lateral wall in chamber and is used for holding the explosion-proof valve of chamber that holds that opens the pressure release when the fire extinguishing agent holds intracavity pressure and reaches opening pressure.
2. Fire extinguishing unit according to claim 1, characterized in that the housing chamber explosion-proof valve is provided with at least one.
3. The fire suppression component of claim 1, wherein the fire suppression component is provided in a rectangular parallelepiped configuration; the explosion-proof valve of the accommodating cavity is arranged on the outer side wall of the fire extinguishing agent accommodating cavity in the length direction.
4. The fire suppression component of claim 1, wherein said battery cell explosion-proof valve is in sealing abutment with said explosion-proof interface.
5. A battery module comprises a plurality of battery units, wherein each battery unit is provided with a positive terminal and a negative terminal; a cell explosion-proof valve on a cell unit disposed between the positive and negative terminals, characterized by further comprising a fire extinguishing member according to any one of claims 1 to 4; the fire extinguishing member is fixed between the positive terminal and the negative terminal of each battery cell.
6. The battery module according to claim 5, wherein the fire extinguishing member has a length greater than that of the battery module.
7. The battery module according to claim 5, wherein the fire extinguishing member is fixed to the battery module by bonding, or the fire extinguishing member is fixed to the battery module by welding, or the fire extinguishing member is fixed to the battery module by a connecting member.
8. The battery module according to claim 5, wherein an insulating protective layer is disposed between the fire extinguishing member and the battery cell.
9. The battery module according to claim 8, wherein the insulating protection layer comprises a plastic coated layer, or the insulating protection layer comprises an insulating material layer.
10. A battery box characterized by comprising a box body and the battery module as claimed in any one of claims 5 to 9 provided in the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023049512.7U CN215537954U (en) | 2020-12-17 | 2020-12-17 | Fire extinguishing part, battery module and battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023049512.7U CN215537954U (en) | 2020-12-17 | 2020-12-17 | Fire extinguishing part, battery module and battery box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215537954U true CN215537954U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023049512.7U Active CN215537954U (en) | 2020-12-17 | 2020-12-17 | Fire extinguishing part, battery module and battery box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116526058A (en) * | 2023-06-29 | 2023-08-01 | 楚能新能源股份有限公司 | Battery explosion-proof valve, battery plug box and electric equipment |
-
2020
- 2020-12-17 CN CN202023049512.7U patent/CN215537954U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116526058A (en) * | 2023-06-29 | 2023-08-01 | 楚能新能源股份有限公司 | Battery explosion-proof valve, battery plug box and electric equipment |
| CN116526058B (en) * | 2023-06-29 | 2023-09-22 | 楚能新能源股份有限公司 | Battery explosion-proof valve, battery plug box and electric equipment |
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